Impact Damage Prediction of Carbon Fiber Foam Sandwich Structure Based on the Hashin Failure Criterion

IF 0.7 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING
K. Yang, Y. P. Zhang, Y. Yang, S. D. Ji, J. Wang, Z. Lv
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Abstract

In the process of use and manufacture, carbon fiber foam sandwich structures were often damaged by low-energy impact, resulting in performance degradation. Therefore, it was necessary to study the damage caused by the low-speed impact of composite sandwich structures. Based on the Hashin failure criterion, this paper established an equivalent finite element model of carbon fiber foam sandwich panels under low-velocity impact. The model was used to simulate the damage of the foam sandwich panel with [±45°/±45°/(core)/±45°/±45°] ply structure under the impact energy of 10.58, 21.17, 31.75, and 42.34 J. The simulation results of impact damage depth were compared with the experimental results. The error was less than 10%, which proved the rationality of the impact equivalent model. The model was used to predict and analyze the damage of foam sandwich panels with [±45°/(core)/±45°], [±45°/ (0°, 90°)/(core)/±45°], and [±45°/(0°, 90°)(core)/(0°, 90°)/±45°] ply structures under 21.17J impact energy. The low energy impact resistance was analyzed by comparing and analyzing the damage situation, impact force response time, and impact velocity response time. The results showed that increasing the number of ply layers [±45°] can reduce the impact damage degree and improve the bearing capacity of sandwich panels.

Abstract Image

基于哈申失效准则的碳纤维泡沫夹层结构冲击破坏预测
在使用和制造过程中,碳纤维泡沫夹层结构经常受到低能量冲击的破坏,导致性能下降。因此,有必要对复合材料夹层结构的低速冲击破坏进行研究。本文基于 Hashin 失效准则,建立了低速冲击下碳纤维泡沫夹层板的等效有限元模型。利用该模型模拟了[±45°/±45°/(芯材)/±45°/±45°]层结构泡沫夹芯板在 10.58、21.17、31.75 和 42.34 J 冲击能量下的破坏情况。误差小于 10%,证明了冲击等效模型的合理性。该模型用于预测和分析[±45°/(芯材)/±45°]、[±45°/(0°,90°)/(芯材)/±45°]和[±45°/(0°,90°)(芯材)/(0°,90°)/±45°]层结构泡沫夹芯板在 21.17J 冲击能量下的破坏情况。通过比较和分析破坏情况、冲击力响应时间和冲击速度响应时间,分析了低能量抗冲击性能。结果表明,增加[±45°]层数可降低冲击破坏程度,提高夹芯板的承载能力。
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来源期刊
Strength of Materials
Strength of Materials MATERIALS SCIENCE, CHARACTERIZATION & TESTING-
CiteScore
1.20
自引率
14.30%
发文量
89
审稿时长
6-12 weeks
期刊介绍: Strength of Materials focuses on the strength of materials and structural components subjected to different types of force and thermal loadings, the limiting strength criteria of structures, and the theory of strength of structures. Consideration is given to actual operating conditions, problems of crack resistance and theories of failure, the theory of oscillations of real mechanical systems, and calculations of the stress-strain state of structural components.
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